Kettlebell Breathing Ladder...

1-15-1
KB Breathing Ladder (you can substitute a dumbbell of equal weight)

Looks like:
1 swing, 1 full breath
2 swings, 2 full breaths
3 swings, 3 full breaths
and so on...up to...
15 swings, 15 full breaths (then back down the ladder)
14 swings, 14 full breaths
13 swings, 13 full breaths
and so on...down to...
1 swing, 1 full breath

Rest period is during breaths. Try not to take additional. If you have to, note it, and try to take none next time.

Breathing Ladders can be done with large movements like Thrusters, KB swings, and all types of Cleans. Here is a good article about them. Have fun!!!